Improved shingle-stool



-UMLLV J vitrail-(b fira www FRANCIS VAN DOREN, 0F ADRIAN, MICl-II'GAN.

. Leners Patent No. 84,595, dazed December 1, 186s.

IIMPROVED SHING-LE-STOOL.

The Schedule referred to in these Letters Patent and making part of thesame To all 'whom it may concern:

Be it known that I, FRANCIS VAN DOREN, of Adrian, in the countyof'Le'nawee, and vState ofMiohigan, have invented a new and usefulImprovement in Shingle- Stools; and I do vhereb) declare that thefollowing is a full, clear, and exact description of the constructionand operation of the same, reference being had to the annexed drawings,making a part of this specification.

Like letters refer to similar parts. p

The nat-ure of my invention consists in the novel construction of aWheeled stool, to sit upon While laying shingles upon n roof.

Figure 1, of the drawings, represents such a stool, when placed upon theroof R, and viewed in the line of the rows of shingles.

Figure 2 represents a view taken in the direction of a horizontal line.

a b and a b represent fourV sharp-edged toothed wheels, turning uponpivots attached to the straps fm, and n. f These straps are formed orbent in the shape represented in iig. 1, the one side being longer thanthe other, so as to allowthe seat S to sit about level upon ordinaryroofs.

The wheels c 11 and a b have sharp teeth upon the edges, to prevent themfrom slipping upon the roof.

Having thus described my invention, s

Vhat I claim as new, aud desire t0 secure by Letters Patent, is

The combination of the seat S, the metallicbars m n, bent to form legsof' unequal length, and the four serrated wheels, a a b b', allconstructed, arranged, and employed in the manner and for'the purposeherein JAMES CLARK.

